Device for preventing flies entering houses.



LBROOKS. DEVICE FOB PREVENTING FLIES ENTERING HOUSE-S APPLICATIDN FILEDHAY 8, I915.

1,4,696. Patefited 001;. 30, 1917.

Attorneys cation.

Jon v isnooxs or. manrn'rrajoxnarroim, AssIGnoB or on'E-iiAnnroononGE n.i.suLn vAN, E MARIETIA, ,oKLnHo A, 1 ,i .1 t

non rnnvnn'rnvcr rfmns En ma Honsns.

Oklahoma, have invented a new and use-v ful Device for Preventing FliesEntering Houses, of which the following. a specifi- The device formingthe subject matter of this application 'is ad'apte'd'to be em= ployedfor producing an agitation of the air--- adjacent the free edge of adoor as the door is moved to an open position or closed, thereby toprevent fiies'from entering the building for which the door constitutesaclosure.

The invention comprises a rotating fan, and one object of the inventionis to provide novel meansfor actuating the fan, the door constitutingthe driving element for the actuating means. t

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the presentinvention appertains.

With the above and other objects in view which will appear as thedescription pro ceeds, the invention resides in the combination andarrangement of parts and inthe details of construction hereinafterdescribed and claimed, it being understood -that changes in the preciseembodiment of the invention herein disclosed can be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawing Figure 1 shows the invention in frontelevation;

Fig. 2 is a side elevation, parts being broken away;

Fig. 3 is a top plan, parts being removed and broken away.

In the accompanying drawings, the numeral 1 indicates a door frame, andthe numeral 2 designates a door connected with the door frame 1 byhinges r3. Secured to the door frame 1 and projecting horizontallytherefrom is a lower bracket 1, the same preferably being of angularform. An upper bracket is provided, the same comprising cooperatingangle members 5 and 6, the constituent members 5 and 6 of the upperbracket being secured to the door frame 1 adjacent-the top of the door2. The memjjspeciiflcationjofLettersratenti .a piicatidnefilea a s;1915.Serial 1\1'o. 26,826."

'.disclos'e.x.\Secured to the doori2iis a pivot hers 5 and :of theupperbracket carry ashaft 7 supporting for; rotation a' horiPatentedlOchgf),1917,

zontally disposed, grooved t guidekwheel 8. Mounted in the, members 5and- 6 .of the,

upper bracket is a shaft; 9 supporting for between the guide/wheel 8 andthe pinion'lO rotationa pinion 10. I A rack bar 111 extends" and is,heldv in mesh with the, pinion 1Ojby I the guide wheel 8, as-Fig. 2 willclearly spindle comprising a base 50, a forwardly presented arm 12, andan upstanding finger 14, the rack bar 11 beingprovided at one end withan eye 15 adapted to be slipped over the finger 14, the constructionbeing such that one end of the rack bar 11 is pivotally assembled withthe door 2.

The invention comprises a fan denoted generally by the numeral'17 andcomprising any desired number of radial blades '18, the fan 17 beingvertically disposed, adjacent the free edge of the door 2. v Thelower'end of the fan 17 terminatesin a shaft 19 journaled in thebracket4:, and the upper end of j x the fan is equipped with a shaft 20journaled for rotation in the member 5 of the upper bracket, the shaft20 carrying a gear j wheel 21 meshing into the pinion 10.

As will be understood readily, when the,

door 2- is. swung on its hinges, the rack bar 11 will be movedlongitudinally, and will swing in a horizontal plane, the bar being heldby the guide wheel 8 in mesh with the i pinion '10, and motion beingtransmitted to the pinion 10, the pinion 1O imparting rotation to thefan 17 through the medium of the gear wheel 21. The fan 17, therefore,will be rotated rapidly, whenever the door 2 is opened or closed thedraft thus produced tending to prevent flies from entering the buildingfor which the door 2 constitute a closure. Owing to the inter-- positionof the pinion 10 between the gear wheel 21 and the rack bar 11, thespeed of rotation of the fan 17 is increased. A

skilled mechanic will understand, however, without a specificdelineation, but with the present drawings before him, that if desired,the pinion 10 may be omitted from the gear train whereby the rotatingfan is actuated.

Having thus described the invention, what is claimed is j 1 In a deviceof the class described, a door frame; a hingedly mounted door; a lowerbracket secured to the franie; an iijj 'ei;

with the grooved wheel, and provided in its bracket secured to the frameand ineluding Emma edge with a rack meshing into the 20 upper and'lowerparts, the upper part pro jecting outwardly beyond the lower part; a fansubstantially, coextensive in length with the door, the lower end of thefan being journaled in the lower bracket, and the upper end of the fanbeing journaled in the upper part of the upper bracket, inde pendentlyof the lower part ofthe upper bracket; a gear wheel carried by the upperend of the fan; a pinion located between the upper andlower parts of theupper'bracket and journaled thereon, the gear wheel meshing into thepinion; a groovedwheel located 7 between the upper and lower parts ofthe upper bracket and journaled thereon; a rackbar having a smooth rearedge cooperating Copies of this patent may be obtained for five centseach, by addressing the Commissioner ojf Patents,

j pinion; and a pivot spindle fixed to the doorand upstanding above theupper edge ,of the door, the pivot spindle being providedwith a shoulderon which the rack bar rests, the rack bar being mounted to swin on thespindle in a plane parallel to the'plane-in which the gear wheel and thepinion rotate. p n e In testimony that Iclai n the foregoing as my own,I have hereto affixed my signature in the presence of two witnesses.

V JOHN BROOKS,

' Witnessesi i i i 1 SyBLAoiz,

M. B. FURNTEIN.

Washington, D. O.

